{
	//二进制数值
	console.log(0b111111011);
	//八进制
	console.log(0o767);
}

{
	console.log('15',Number.isFinite(15));
	console.log('NaN',Number.isFinite(NaN));
	console.log('1/0',Number.isFinite(1/0));
	console.log('NaN',Number.isNaN(NaN));
	console.log('NaN',Number.isNaN(0));
}

{
	console.log('25',Number.isInteger(25));
	console.log('25.0',Number.isInteger(25.0));
	console.log('25.1',Number.isInteger(25.1));
}

{
	console.log(Number.MAX_SAFE_INTEGER,Number.MIN_SAFE_INTEGER);
	console.log('10',Number.isSafeInteger(10));
	console.log('a',Number.isSafeInteger('a'));
}

{
	//取整
	console.log('4.1',Math.trunc(4.1));
}

{
	console.log('-5',Math.sign(-5));
	console.log('5',Math.sign(5));
	console.log('0',Math.sign(0));
	console.log('foo',Math.sign('foo'));
}

{
	//立方根
	console.log('-1',Math.cbrt(-1));
	console.log('8',Math.cbrt(8));
}